Novel Ag-Cu bimetallic alloy decorated near-infrared responsive three-dimensional rod-like architectures for efficient photocatalytic water purification

Yuanyuan Zhang; Lili Wang; Xiaoying Kong; Haiyan Jiang; Fan Zhang; Jinsheng Shi

doi:10.1016/j.jcis.2018.02.005

Novel Ag-Cu bimetallic alloy decorated near-infrared responsive three-dimensional rod-like architectures for efficient photocatalytic water purification

Yuanyuan Zhang
, Lili Wang
, Xiaoying Kong
, Haiyan Jiang
, Fan Zhang
, Jinsheng Shi

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

In this paper, novel silver-copper bimetallic alloy (Ag-Cu) nanoparticles (NPs) decorated β-NaYF₄: Yb³⁺, Tm³⁺@TiO₂ (“@” means TiO₂ supported on NaYF₄: Yb³⁺, Tm³⁺, marked as NYFT) micro-rods were successfully synthesized through a surfactant-assistant sol–gel method and H₂ reduction process for the first time. In NYFT@Ag-Cu composite, efficient energy transfer from β-NaYF₄: Yb³⁺, Tm³⁺ (NYF) to TiO₂ and metal NPs was confirmed. Under near-infrared (NIR) light irradiation, Ag-Cu alloy supported NYFT exhibited significantly enhanced photocatalytic activity in comparison with other samples, and water disinfection involving 100% inactivation of bacteria was realized within 8 h. The strengthened photocatalytic activity was assigned to the synergistic effect of up-conversion (UC) material and alloy NPs. Some reasons for the improved photocatalytic activity were systematically investigated and a probable mechanism for NIR-responsive photocatalysis was elucidated.

Original language	English
Pages (from-to)	29-39
Number of pages	11
Journal	Journal of Colloid and Interface Science
Volume	522
DOIs	https://doi.org/10.1016/j.jcis.2018.02.005
State	Published - 15 Jul 2018
Externally published	Yes

Keywords

3D micro-rods
Ag-Cu bimetallic alloy
NIR-response
Photocatalytic water purification

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10.1016/j.jcis.2018.02.005

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@article{b23f2d6429174fbbb705454eef0a49dd,

title = "Novel Ag-Cu bimetallic alloy decorated near-infrared responsive three-dimensional rod-like architectures for efficient photocatalytic water purification",

abstract = "In this paper, novel silver-copper bimetallic alloy (Ag-Cu) nanoparticles (NPs) decorated β-NaYF4: Yb3+, Tm3+@TiO2 (“@” means TiO2 supported on NaYF4: Yb3+, Tm3+, marked as NYFT) micro-rods were successfully synthesized through a surfactant-assistant sol–gel method and H2 reduction process for the first time. In NYFT@Ag-Cu composite, efficient energy transfer from β-NaYF4: Yb3+, Tm3+ (NYF) to TiO2 and metal NPs was confirmed. Under near-infrared (NIR) light irradiation, Ag-Cu alloy supported NYFT exhibited significantly enhanced photocatalytic activity in comparison with other samples, and water disinfection involving 100\% inactivation of bacteria was realized within 8 h. The strengthened photocatalytic activity was assigned to the synergistic effect of up-conversion (UC) material and alloy NPs. Some reasons for the improved photocatalytic activity were systematically investigated and a probable mechanism for NIR-responsive photocatalysis was elucidated.",

keywords = "3D micro-rods, Ag-Cu bimetallic alloy, NIR-response, Photocatalytic water purification",

author = "Yuanyuan Zhang and Lili Wang and Xiaoying Kong and Haiyan Jiang and Fan Zhang and Jinsheng Shi",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Inc.",

year = "2018",

month = jul,

day = "15",

doi = "10.1016/j.jcis.2018.02.005",

language = "英语",

volume = "522",

pages = "29--39",

journal = "Journal of Colloid and Interface Science",

issn = "0021-9797",

publisher = "Academic Press Inc.",

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TY - JOUR

T1 - Novel Ag-Cu bimetallic alloy decorated near-infrared responsive three-dimensional rod-like architectures for efficient photocatalytic water purification

AU - Zhang, Yuanyuan

AU - Wang, Lili

AU - Kong, Xiaoying

AU - Jiang, Haiyan

AU - Zhang, Fan

AU - Shi, Jinsheng

PY - 2018/7/15

Y1 - 2018/7/15

N2 - In this paper, novel silver-copper bimetallic alloy (Ag-Cu) nanoparticles (NPs) decorated β-NaYF4: Yb3+, Tm3+@TiO2 (“@” means TiO2 supported on NaYF4: Yb3+, Tm3+, marked as NYFT) micro-rods were successfully synthesized through a surfactant-assistant sol–gel method and H2 reduction process for the first time. In NYFT@Ag-Cu composite, efficient energy transfer from β-NaYF4: Yb3+, Tm3+ (NYF) to TiO2 and metal NPs was confirmed. Under near-infrared (NIR) light irradiation, Ag-Cu alloy supported NYFT exhibited significantly enhanced photocatalytic activity in comparison with other samples, and water disinfection involving 100% inactivation of bacteria was realized within 8 h. The strengthened photocatalytic activity was assigned to the synergistic effect of up-conversion (UC) material and alloy NPs. Some reasons for the improved photocatalytic activity were systematically investigated and a probable mechanism for NIR-responsive photocatalysis was elucidated.

AB - In this paper, novel silver-copper bimetallic alloy (Ag-Cu) nanoparticles (NPs) decorated β-NaYF4: Yb3+, Tm3+@TiO2 (“@” means TiO2 supported on NaYF4: Yb3+, Tm3+, marked as NYFT) micro-rods were successfully synthesized through a surfactant-assistant sol–gel method and H2 reduction process for the first time. In NYFT@Ag-Cu composite, efficient energy transfer from β-NaYF4: Yb3+, Tm3+ (NYF) to TiO2 and metal NPs was confirmed. Under near-infrared (NIR) light irradiation, Ag-Cu alloy supported NYFT exhibited significantly enhanced photocatalytic activity in comparison with other samples, and water disinfection involving 100% inactivation of bacteria was realized within 8 h. The strengthened photocatalytic activity was assigned to the synergistic effect of up-conversion (UC) material and alloy NPs. Some reasons for the improved photocatalytic activity were systematically investigated and a probable mechanism for NIR-responsive photocatalysis was elucidated.

KW - 3D micro-rods

KW - Ag-Cu bimetallic alloy

KW - NIR-response

KW - Photocatalytic water purification

UR - https://www.scopus.com/pages/publications/85044131623

U2 - 10.1016/j.jcis.2018.02.005

DO - 10.1016/j.jcis.2018.02.005

M3 - 文章

C2 - 29574266

AN - SCOPUS:85044131623

SN - 0021-9797

VL - 522

SP - 29

EP - 39

JO - Journal of Colloid and Interface Science

JF - Journal of Colloid and Interface Science

ER -

Novel Ag-Cu bimetallic alloy decorated near-infrared responsive three-dimensional rod-like architectures for efficient photocatalytic water purification

Abstract

Keywords

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